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Grain Moisture meter

Grain moisture application: used for fast and accurate measurement of moisture and temperature in the process of allotment, acquisition, storage, machining of packed grains, feedstuff, powder.

Grain moisture meter Model: MC-7825G  multifunction for all grains

grain-moisture-meter-MC7825G.jpg

Measuring range: 6-30%

Resolution: 0.1

Display: LCD display

Accuracy: ±(0.5%n+0.1)

PC interface: RS232C (Software & communicating cable are optional)

Auto power off

Power supply: 4x1.5V AAA (UM-4) battery

Battery indicator: low battery indicator

Dimensions: 165x62x26mm

Weight (not including probe):119g

1. FEATURES

Be a powerful and versatile instrument for measuring and diagnosing dampness in grains.

Widely used for fast and accurate measurement of moisture and temperature in the process of allotment, acquisition, storage, machining of packed grains.

Digital display gives exact reading with no guessing or errors while a colour coded light (LED) indicates the moisture condition of the material. This combined

presentation of moisture measurement helps the user to map the extent of problems and monitor changes in condition precisely and reliably.

Used the exclusive Micro-computer LSI circuit and crystal time base to offer high accuracy measurement. It can obtain automatically the temperature corrected

moisture value.

Wide measuring range and high resolution.   Automatic power off to conserve power. Can communicate with PC computer for statistics and printing by the optional cable and software for RS232C interface.

2 SPECIFICATIONS

Display 4 digits, 10 mm LCD

With colour coded LEDs indication

Green LED represents a safe, air-dry state.

Yellow LED represents a borderline State.

Red LED represents a damp state.

Range: average 6-30%

Accuracy: ± 0.5%n or ±0.5%

Whichever is the greater

PC interface: RS232C interface

( Cable and software is not included)

Power supply: 4x1.5 AA A size

(UM-4) battery

Power off : 2 modes

Manual off at any time

Auto power off after 5 minutes from last

key operation

Operating conditions:

Temperature : 0-50   Humidity : below 90% RH

Dimensions:

Unit 165x62x26mm or 6.5x2.4x1.0 inch

Probe 368x44x25 mm or 14.5x1.7x1.0 inch

Weight: 320g

(not including batteries but including the probe)

Standard accessories included :

Carrying case 1 pc.

Operation manual 1 pc.

Probe .............................................1 pc.

Optional accessory

Cable and software for RS232C

4. MEASURING PROCEDURE

4.1 Depress the power key and release to power on the meter.

4.2 To check if the grain code is right by pressing and releasing the Function key. Such code can be changed by the Plus/Hold key or Minus/Zero

key when the `cdxx` is on the display. Here `cd` is the abbreviation for `code` and `xx` is the grain code no. If keep depressing the Plus/Hold or Minus/Zero key, the material code will step into next code about every second and releasing it till the grain code is right.

4.3 Grain code selection

The grain codes are listed in the table on page 7.

if the grain to be measured is not listed in the table, please ascertain its grain code among `cd01` and `cd36` by the standard oven-drying

method, that is by oven-drying of commercial samples of the grain to be measured. Write down the code for later use.

4.4 Insert the plug (3-2) of the measurer into the

probe jack (3-3).

4.5 Insert the needles into the grain to be measured.

The reading on the display is the moisture content. Read the moisture level value from the display and note the moisture condition of the material from the colour coded LED. Please note that reading will change if needles stay in grain longer.

4.5 To hold the max. value during measurements,  Just depress the /HOLD key till the symbol  `max` appears on the display. To display the instant values, just depress the /HOLD key again till the symbol `max` disappears on the display.

4.6 Zero calibration

The zero feature enable the user to compensate for the effect of changes in both temperature and humidity. When the probe does not touch anything besides air, the reading on the display should be `0` or `0.0` . If not, please depress and release the zero key to carry out zero calibration.

5. ALARM LIMITS

5.1 There is a coded coloured LED indicating the status of moisture. It is controlled by 2 alarm limits. The factory settings are as follow.

AL1 =13 and AL2 =18

If the reading<AL1, the green LED is on.  If the reading>AL2, the red LED is on.  If the reading lies between AL1 and AL2, the

yellow LED is on. Users can change the alarm limits when as per their intention.

5.2 How to set the alarm limits

5.2.1 Depress Power key and not release it till 'AL1' appears on the Display. It is about 7 or 9 seconds from starting depressing Power key.

5.2.2 'AL2 'Such value can be changed to your intended

5Appendix: Code table for Grains

Test code and grain species 

code

grain

range

code

grain

range

code

grain

range

cd01

Wheat/Rye

(Whole)

7-31

cd13

Coffee

(Whole)

7-31

cd25

Flax

(Whole)

5-21

cd02

Wheat/Rye

(Ground)

7-29

cd14

Coffee

(Ground)

7-26

cd26

Peas (Progreta)

(Ground)

5-21

cd03

Paddy

(Whole)

7-29

cd15

Coffee Green

(Ground)

7-27

cd27

Peas

(Ground)

7-27

cd04

Paddy

(Ground)

7-26

cd16

Cocoa Beans

(Whole)

4-13

cd28

Ground nuts Hulled

(Whole)

5-13

cd05

Rice

(Milled)

7-29

cd17

Linseed

(Whole)

6-21

cd29

Grass Seed/Rye grass

(Whole)

7-28

cd06

Semolina

7-25

cd18

Lentils

(Ground/ Whole)

7-21

cd30

Grass Seed/Cocksfoot

(Whole)

6-23

cd07

Maize/Corn

(Whole)

7-27

cd19

Oilseed Rape

(Ground)

5-26

cd31

Flour/Soft Wheat

7-29

cd08

Maize/Corn

(Ground)

7-26

cd20

Mustard Seed

(Whole)

7-21

cd32

Clover/White Seed

(Whole)

6-24

cd09

Soya Beans

(Whole)

6-28

cd21

Sorghum/Milo

(Whole)

7-28

cd33

Clover/Red Lucerne Seed

(Whole)

6-22

cd10

Soya Beans

(Ground)

5-22

cd22

Sorghum/Milo

(Ground)

7-26

cd34

Buckwheat

(Ground)

7-29

cd11

Barley/Oats

(Whole)

7-34

cd23

Sunflower seed

(Whole)

5-25

cd35

Brassicas/Brussels Sprout

(whole/ground),Cabbage seed

5-15

cd12

Barley/Oats

(Ground)

7-29

cd24

Sugarbeet Seed

(Whole)

6-20

cd36

Beans/Tic/Winter

(Ground)

5-15

　

Grain moisture meter:MC7821

grain-moisture-meter-MC7821.jpg

measuring range: moisture:8～20%
temperature :-10～55℃
resolution:0.1
accuracy: moisture:±0.6%（less than14%)
±0.8% (15%-18%)
±1% (OVER 18%)
temperature .:±0.8℃
grains : paddy, rice, corn, wheat,etc.
power:4X1.5V AA (UM-3) Battery
dimension:178x68x39mm　

1. USAGE

Used for fast and accurate measurement of moisture and temperature in the process of allotment, acquisition, storage, machining of packed grains.

2. FEATURES

* Used the exclusive one chip of MICROCOMPUTER to offer high accurate measurement and wide range.

* LCD display gives exact readings with no guessing.

* Compact, light-weight, and easy operation.

* Can be applicable to the test of packed grains, foodstuff, feedstuff.

* The use of durable, long lasting components, including a strong, light weight ABS-plastic housing assures maintenance free performance for many years. The housing has been carefully shaped to fit comfortably in either hand.

3. SPECIFICATIONS

3.1 Display: 4 digits 10mm LCD

3.2 Range: Moisture content: 8~20%  Temperature: -10~55

3.3 Resolution: 0.1

3.4 Accuracy: Moisture: 1%

Temperature: 0.8

3.5 Operation Temp: 0~50 or 32~122

3.6 Operation Humidity: 85%

3.7 Battery: 4x1.5 AA (UM-3) battery

3.8 Size: 178x68x39mm

3.9 Weight: about 280g (not including measurer and batteries)

5.MEASURING PROCEDURE

5.1 Temperature

5.1.1 Insert the PLUG of the measurer into the SOCKET.

5.1.2 Set the FUNCTION SWITCH to TEMP position.

It takes a few minutes to stabilize after inserting the steel needle into the grains or foodstuff before taking readings.

5.2 Moisture

5.2.1 Insert the PLUG of the measurer into the SOCKET.

5.2.2 Hold the handle of measurement needles and leave needles in the air, i.e. don't let needles touch anything except air.

5.2.3 Set the Function Switch to the MC (Moisture Content) position to switch on the power supply.You will hear 2 times

7.2 Operation manual 1pc.

7.3 Measurer 1pc.

8.NOTES

8.1 This instrument is of very high input resistance. Every part has good insulation. Please keep it in a dry, dustproof place.

8.2 It is very, very difficult to accurately measure the moisture content of grains. This is because any grain is of organic body. The same kind of grain in different regions or states, even in the same region or state but in different soils has different characteristics. That is why we first measure the moisture content of grain by the standard method of oven, the most accurate but less efficient method to measure the moisture content, then measure the moisture content using such instruments. By calculating the bias, we could amend the measurment value. In this case, the measurement values are more accurate and  more efficient.

　

of click sound. That is selfcalibration

by the instrument.

5.2.4 Select the grain to be measured by

depressing the SELECTION button.

5.2.5 Insert the needles into the grain to

be measured. The reading on the display

will change if needles stay in grain longer.

6. BATTERY REPLACEMENT

6.1 When it is necessary to replace the battery, i.e. battery voltage less than approx. 5v, will appear on the Display.

6.2 To loose the screw of the battery cover away from the instrument and remove the batteries.

6.3 Install the batteries correctly into the case. Permanent damage to the circuit from incorrect installation.

6.4 If the instrument is not to be used for any extended period, remove batteries.

7. ACCESSORIES

7.1 Carrying case 1pc.

7.2 Operation manual 1pc.

7.3 Measurer 1pc.

8.NOTES

8.1 This instrument is of very high input resistance. Every part has good insulation. Please keep it in a dry, dustproof place.

8.2 It is very, very difficult to accurately measure the moisture content of grains. This is because any grain is of

organic body. The same kind of grain in different regions or states, even in the same region or state but in different soils has different characteristics. That is why we first measure the moisture content of grain by the standard method of oven, the most accurate but less efficient method to measure the moisture content, then measure the moisture content using such instruments. By calculating the bias, we could amend the measurment value. In this case, the measurement values are more accurate and more efficient.